20416774031 has 2 divisors, whose sum is σ = 20416774032. Its totient is φ = 20416774030.

The previous prime is 20416774013. The next prime is 20416774043. The reversal of 20416774031 is 13047761402.

Together with previous prime (20416774013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20416774031 - 2⁶ = 20416773967 is a prime.

It is a super-2 number, since 2×20416774031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20416773982 and 20416774000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20416774331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10208387015 + 10208387016.

It is an arithmetic number, because the mean of its divisors is an integer number (10208387016).

Almost surely, 2^20416774031 is an apocalyptic number.

20416774031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20416774031 is an equidigital number, since it uses as much as digits as its factorization.

20416774031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 20416774031 in words is "twenty billion, four hundred sixteen million, seven hundred seventy-four thousand, thirty-one".